HKDFParams.Builder (Apache XML Security for Java 4.0.4 API)

java.lang.Object
- org.apache.xml.security.encryption.params.HKDFParams.Builder

Enclosing class:

HKDFParams
```
public static class HKDFParams.Builder
extends Object
```
This class is used to create HKDF configuration parameters HKDFParams. The key length and HMAC hash algorithm are required parameters.

Constructor Summary

Constructors
Modifier Constructor Description

protected Builder(int keyBitLength, String hmacHashAlgorithm)
Constructor for the HKDFParams builder.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`HKDFParams`	`build()`	Build the HKDFParams instance with the configured parameters.
`HKDFParams.Builder`	`info(byte[] info)`	Set the (optional) info value which is used for the key derivation.
`HKDFParams.Builder`	`salt(byte[] salt)`	Set the (optional) salt value which is used for the key derivation.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Builder
```
protected Builder(int keyBitLength,
                  String hmacHashAlgorithm)
```
    Constructor for the HKDFParams builder. The key bit length and HMAC hash algorithm are required parameters.
    
    Parameters:
    
    keyBitLength - the length of the derived key in bits
    
    hmacHashAlgorithm - the HMAC hash algorithm URI to use for the key derivation
- Method Detail
  - salt
```
public HKDFParams.Builder salt(byte[] salt)
```
    Set the (optional) salt value which is used for the key derivation.
    
    Parameters:
    
    salt - the hkdf salt value
    
    Returns:
    
    the self updated builder instance
  - info
```
public HKDFParams.Builder info(byte[] info)
```
    Set the (optional) info value which is used for the key derivation.
    
    Parameters:
    
    info - the hkdf info value
    
    Returns:
    
    the self updated builder instance
  - build
```
public HKDFParams build()
```
    Build the HKDFParams instance with the configured parameters.
    
    Returns:
    
    the configured HKDFParams instance